用所给词形式填 ,listen,the children--(sing)---(loud) mary's hobby is----(swim)in the winter
问题描述：
用所给词形式填 ,listen,the children--(sing)---(loud) mary's hobby is----(swim)in the winter
答
listen,the children--(are singing)---(aloud) mary's hobby is----(swimming)-- in the winter
答
Listen!the children are singing loudly!
mary's hobby is swimming in the winter